You seem to be confusing what developers and publishers do.
Developers get paid money by the publishers to work on a game, they use that money to pay their staff salaries & incentives, every single game needs a publisher, most of the time the publisher is a big third party publisher, but sometimes the publisher is a platform holder, in that case the game will most definitely be exclusive.
The case with Bloodborne is exactly the same as Heavy Rain, Forza Horizon, Ratchet & Clank, or Alan Wake. & it's no different than Destiny, Dark Souls, or Star Ocean. The only difference between the former examples & the latter is the publisher that funded the game's development & marketing.
I noticed that a lot of people on GAF don't understand the relationship between developers & publishers & how they work.
What's next for FROM software? Look for a publisher to publish their next game, that's what every single developer does after finishing their project, they either pitch their project to different publishers, or publishers contact them to do a project, & in a lot of cases that are unpleasant to some people, the publisher is Sony or Microsoft, could the publisher have been Ubisoft or SE for example? Yes, but FROM software relies on publishers to pay their staff & fund their projects, they don't tell Sony or Microsoft "No, we won't do a project for you because someone doesn't like it, we'll go ask Ubisoft to publish our game even though we run the risk of Ubisoft declining and/or sabotaging our vision".